What problem does it solve? It produces or reviews Clean (Onion) architecture diagrams for a single system as four concentric rings — Entities, Use Cases, Interface Adapters, Frameworks & Drivers — and proves the Dependency Rule by ensuring every cross-ring dependency arrow points inward, catching outward-pointing edges and framework leaks into the core. ## Core Features & Use Cases - Diagram generation: Create Clean Architecture diagrams from a prompt, a template, an existing layered drawing, or by reverse-engineering a repository's package structure into the four rings. - Dependency Rule validation: Run architecture validation to confirm zero outward-pointing edges, correct port ownership, and a framework-free core, then apply suggested improvements. - Quality loop: Lint, score, repair, and polish the drawing until it reaches a score of at least 95 with zero hard blockers, with rollback to checkpoints on regression. - Use Case: Ask for a Clean Architecture view of your order service — Order and Money entities, a PlaceOrder use case owning repository and payment ports, Express controllers, and Postgres/Stripe on the outer ring — and get a validated diagram with a shareable link and export. ## Quick Start Ask the assistant to draw your system in Clean Architecture with its entities, use cases, adapters, and frameworks, and to prove every dependency arrow points inward.